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网站怎么做qq微信登陆,营销课程培训,seo公司推广,怎么给网站开发后台文章目录前言一、回顾上一关知识点二、靶场第七关通关思路1、看源代码2、空格绕过3、检查文件是否成功上传总结前言此文章只用于学习和反思巩固文件上传漏洞知识，禁止用于做非法攻击。注意靶场是可以练习的平台，不能随意去尚未授权的网站做渗透测试…

文章目录

前言
一、回顾上一关知识点
二、靶场第七关通关思路
- 1、看源代码
- 2、空格绕过
- 3、检查文件是否成功上传
总结

前言

此文章只用于学习和反思巩固文件上传漏洞知识，禁止用于做非法攻击。注意靶场是可以练习的平台，不能随意去尚未授权的网站做渗透测试！！！

一、回顾上一关知识点

前两关是利用window命名文件的后缀名特性，因为window对大小写不敏感。而且命名后缀名的时候，后缀名加空格或者是后缀名加点都是等效于不加东西的文件。比如1.php+空格也就是1.php

二、靶场第七关通关思路

1、看源代码
2、空格绕过
3、检查文件是否成功上传

1、看源代码

$is_upload = false;
$msg = null;
if (isset($_POST['submit'])) {if (file_exists(UPLOAD_PATH)) {$deny_ext = array(".php",".php5",".php4",".php3",".php2",".html",".htm",".phtml",".pht",".pHp",".pHp5",".pHp4",".pHp3",".pHp2",".Html",".Htm",".pHtml",".jsp",".jspa",".jspx",".jsw",".jsv",".jspf",".jtml",".jSp",".jSpx",".jSpa",".jSw",".jSv",".jSpf",".jHtml",".asp",".aspx",".asa",".asax",".ascx",".ashx",".asmx",".cer",".aSp",".aSpx",".aSa",".aSax",".aScx",".aShx",".aSmx",".cEr",".sWf",".swf",".htaccess",".ini");$file_name = $_FILES['upload_file']['name'];$file_name = deldot($file_name);//删除文件名末尾的点$file_ext = strrchr($file_name, '.');$file_ext = strtolower($file_ext); //转换为小写$file_ext = str_ireplace('::$DATA', '', $file_ext);//去除字符串::$DATAif (!in_array($file_ext, $deny_ext)) {$temp_file = $_FILES['upload_file']['tmp_name'];$img_path = UPLOAD_PATH.'/'.date("YmdHis").rand(1000,9999).$file_ext;if (move_uploaded_file($temp_file,$img_path)) {$is_upload = true;} else {$msg = '上传出错！';}} else {$msg = '此文件不允许上传';}} else {$msg = UPLOAD_PATH . '文件夹不存在,请手工创建！';}
}